dt gk

[cas49]

'fraid I am stuck on last two !!

47ac Ideal sequence of changes in heat engines that provides a standard for performance measuremnt,conceived by a 19th century French engineer C-R-R-O-C-C-E

 

52ac Yellow toxic solid used as a fast acting herbicide that is deactivated on contact with soil

-A-A---T

[ST]

Carnot Cycle

Paraquat

[cas49]

Thank you so much - I can rest easy now !!